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3.
Check for belt deflection as instructed in
Adjusting Synchronous Belts on Page 59.
4.
Verify that left and right belts (where used)
have same deflection, or binding may occur.
5.
Remove any contaminants in crevices of
cogs or teeth by using firm-bristled tooth-
brush while supporting underside of belt with
your finger to prevent stretching.
Note: Material build-up on cogs or teeth can
cause bump or notch in cutting path.
6.
If any belts have cracks or damaged
teeth, replace as instructed in Replacing
Synchronous Belts on Page 61.
Maintaining Laser
Components
The laser tube(s) on the Model G0911–G0914 has
no maintenance requirements other than protect-
ing it from freezing when filled with water, and
periodic inspection to verify water connections are
secure, large air bubbles are not present in the
tube, and electrical contacts are clean and free
from corrosion.
Laser tube, lenses, and mirrors are consum-
able parts and are covered under warranty only
for defects that occur during shipping. Periodic
replacement is required and should be done as a
complete set.
The life expectancy of the laser tube is affected by
the laser operating time, strength setting, heating
and cooling cycles, and the natural dissipation of
gas from the laser tube.
IMPORTANT: Grizzly Industrial does not recom-
mend having a second laser tube on hand for
longer than three months. Laser tubes are per-
ishable and will lose their efficiency over time by
just sitting on the shelf.
Model G0911–G0914 (Mfd. Since 05/21)
Tip: To cover the operating cost of a replacement
laser tube, divide the price of a replacement laser
tube by the amount of units you expect to pro-
duce. This calculation does not take into account
length of laser run time, or power settings required
for different types of widgets, but it will provide a
baseline value to add to each unit to cover laser
tube operating costs.
Laser Optics Introduction
CNC laser cutters and engravers are a new gen-
eration of highly sensitive machines available for
the general consumer market, and require special
attention to properly maintain.
Note: When replacing the laser tube, it is highly
recommended that lenses and mirrors are also
replaced.
The beam emitted from the laser tube is reflected
three times before reaching the focal point on the
workpiece. This alternating direction of laser travel
is achieved by mirrors. Optimum performance of
the machine is largely affected by the ability of
these lenses and mirrors to focus and reflect the
beam without diffusion.
Over time, smoke, fumes, and dust will coat the
reflective surfaces and diffuse the beam, resulting
in low-quality cuts.
If the lenses and mirrors are not kept clean, any
ash or dust on the surface will absorb laser ener-
gy. This energy converts to heat, causing a "ther-
mal lens effect," where the optics will become
permanently pitted after normal use. As a result,
laser machine optics are considered consumable.
Once the optics have begun degrading, the user
will have to increase laser power over time to
achieve the same cutting results. The longer the
laser tube is operated at higher power settings,
the sooner the tube will require replacing.
Treat laser optics with care and protect delicate
surfaces from improper cleaning methods, and
ambient contaminants. Even the smallest dust
particle can cause microscopic scratching if the
surface is wiped by hand. Microscopic scratches
will increase the damage caused by "thermal lens
effect."
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